RU41410U1 - DEVICE FOR REPOSITION OF DISEASES OF DISTAL TIBEROSIS OF THE TISSUE - Google Patents

Abstract

The invention relates to medicine, namely to traumatology and can be used in the treatment of injuries of the distal tibiofibular syndesmosis of the lower leg, both isolated and with concomitant ankle fractures.

The utility model is aimed at simplifying reposition during constriction of syndesmosis and maintaining the stability of the achieved position for the entire duration of the operation. The specified technical result is achieved by the fact that the device for repositioning ruptures of the distal tibiofibular syndesmosis of the lower leg bones consists of a half ring at the ends of which threaded rods having sharp ends for insertion into the bone are fixed through the brackets with the possibility of movement. The rods can move towards each other, or one rod can be rigidly fixed on the half ring, and the other move.

Description

The invention relates to medicine, namely to traumatology and can be used in the treatment of injuries of the distal tibiofibular syndesmosis of the lower leg, both isolated and with concomitant ankle fractures.

Bone reposition devices are known, for example reposition clamps (Mueller, M.E. et al. Guide to Internal Osteosynthesis, AO Technique, Switzerland, 1996, p. 514, Fig. 10.12, items 1, 6, 8) used for treatment of tibiofibular syndesmosis ruptures. After compression of the bones with a clamp, the bones are fixed with a screw.

However, when holding and compressing bones with a known device, it is impossible to control the compressive forces, perform the correct reposition and reliably hold the bones in the position achieved during reposition. Bone displacements are possible during the operation, which requires repeated reposition and radiography. In addition, the clamping elements can damage the skin and soft tissues.

The task is to simplify reposition and increase the stability of the position of the lower leg bones during surgery, is solved as follows.

According to the technical solution, the device for repositioning ruptures of the distal tibiofibular syndesmosis of the lower leg bones is made in the form of a half ring at the ends of which threaded rods having sharp ends for insertion into the bone are fixed with the possibility of movement.

The implementation of the device in the form of a half ring with threaded rods fixed at the ends gives the device rigidity. Sharp-threaded threaded rods are inserted into the bone through small incisions in the skin

(minimally invasive surgery), which does not damage soft tissue structures, while the bones are held securely in the device for the entire duration of the operation. The ability to move the threaded rods in the brackets allows for a gradual reposition of the bones, controlling their position.

Thus, the use of the proposed device allows quite simply to reposition the bones and increase the stability of their retention in the achieved position during surgery.

Figure 1 presents a General view of the device in the frontal plane, Figure 2 is a General view of the device in the sagittal plane.

The device includes a half ring 1 with a diameter of 160 mm, two rods 2, for example of titanium. Rods with a diameter of 6 mm have one sharp end and are mounted on a half ring 1 in the frontal plane using brackets 3 and nuts 4 (all parts from the Ilizarov set). The device is used in assembled form.

The device is used as follows.

With an isolated rupture of the distal tibiofibular syndesmosis of the tibia in the supradermal region, threaded rods are inserted into the bones through skin punctures and soft tissues, then gradually moving the rods towards each other compresses the tibial syndesmosis to normal values using X-ray control. Holding the bone device in the reached position above or below the rods, a permanent fixing position screw is introduced, after which the threaded rods are removed from the bone and the device is dismantled.

In cases of an ankle fracture (fracture of the fibula), often associated with ruptures of the distal tibiofibular syndesmosis, bone osteosynthesis with a metal plate is first performed. Then, in one of the holes of the plate at the level of syndesmosis, the sharp end of one of the rods of the device is installed, the other rod with the sharp end is installed in a diametrically opposite point on the inner surface of the lower third of the tibia. Moving one of

rods according to the existing thread with the help of nuts, counter-move the rod in relation to another rod rigidly fixed in the half ring. After constriction of syndesmosis, radiography is performed in the anterior-posterior projection, then a fixation screw is inserted and final radiography is performed.

The device is easy to install and manipulate when contracting syndesmosis. The achieved reduction is maintained for the entire duration of the operation. Bone constriction is carried out under x-ray control, which allows to achieve the anatomical position of the bones. The operation is minimally invasive. The device consists of standard parts (from sets of the Ilizarov apparatus).

Claims (1)

A device for repositioning ruptures of the distal tibiofibular syndesmosis of the tibia, characterized in that it is made in the form of a half ring, at the ends of which threaded rods are fastened through brackets with sharp ends for insertion into the bone.